I can't imagine that a lack of fried ratchicken in south London will be anything other than a good thing. A bit less litter to pick up as well (we have a KFC, so it's most of the litter, it being traditional to shove the greasy nasty into your mouth while you walk home, slurping down some sugar solution, and then once done, throw it into the bushes). That and the roundabout at the end of town keeps getting demolished because customers park there right in front of the KFC (and the cashpoint next door) and prevent lorries getting around properly.
ETA: there's no shortage of parking but I guess if you need junk food, you really have to stop right there.